What to do when your pedaller has loose pedals and the crank arms have stripped threads.
Sometimes after you have had your pedal bike for awhile you might find the pedals get loose.
Usually what has happened is the pedal was allowed to become loose, and then it was pedalled while loose. This will damage the crank arm threads. This can also happen if the pedals weren’t fully tightened at assembly.
How did this happen?
Regardless of the price you paid for your pedaller, there is one commonality. The bike has moving parts.
Any piece of equipment with moving parts, from a $9 pedaller to a $10K racing bike, needs to be:
a) properly assembled,
b) inspected for wear and tear during use, and
c) well maintained.
If your pedals get loose, and you continue to use your bike, the threads on the crank arm WILL strip.
Can this be prevented?
Most manuals will specify the importance of careful pedal assembly.
If, during assembly, the left pedal was mistakenly inserted in the right crank arm (or vice versa), the first few threads will be damaged.
If the pedal isn’t lined up correctly and you screw it in, they will cross-thread.
It is very important you ensure the pedals are screwed in correctly and very TIGHT.
Bike manuals will often recommended to inspect the pedals for tightness periodically and re-torque.
Is this covered by warranty?
No. Worn threads are an assembly or maintenance issue. This is not a factory defect or covered by warranty.
How can I fix the loose pedals?
In some cases, if the pedals start to come loose and there is still good thread left on the crank arms, you can try a quick/cheap fix of applying blue Loctite or Threadlocker to the pedal threads and re-tighten. TIGHT!!
If during assembly the first couple threads were damaged you can use a “tap” to re-dress the threads.
If the crank arm, or pedals, or both, are too stripped; then the crank arms will need to be replaced and possibly the pedals too. This will depend on the amount of thread damage.
To replace the crank arm you need a special pulling tool. A local bicycle shop has the tools and can do the repair work for you. Alternatively, you can purchase a crank puller at your local bicycle shop and do the work yourself. Most crank puller tools come with instructions.
Where can I find parts for my pedaller?
Contact the dealer you purchased your bike from. They can direct you to where you can get parts or a pedal replacement repair kit.
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